From 46439007cf417cbd9ac8049bb4122c890097a0fa Mon Sep 17 00:00:00 2001 From: "Charles.Forsyth" Date: Fri, 22 Dec 2006 20:52:35 +0000 Subject: 20060303-partial --- man/3/switch | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 man/3/switch (limited to 'man/3/switch') diff --git a/man/3/switch b/man/3/switch new file mode 100644 index 00000000..4c74db66 --- /dev/null +++ b/man/3/switch @@ -0,0 +1,28 @@ +.TH SWITCH 3 MPC8xx +.SH NAME +switch \- hardware option switch +.SH SYNOPSYS +.nf +.B bind -a '#r' /dev + +.B /dev/switch +.fi +.SH DESCRIPTION +.PP +The switch device serves a one-level directory, +giving access to one read-only file, +.BR switch . +A read returns the value of the development board's +option switch (DS1), represented as a decimal number +from 0 to 15, representing four bits, +each corresponding to one of the four toggles. +Each toggle produces the value 0 when it +is set `ON' and 1 when it is off. +Toggle 1 corresponds to bit +.B 1<<3 +in the number, +toggle 2 corresponds to bit +.BR 1<<2 , +and so on +.SH SOURCE +.B /os/mpc/devrtc.c -- cgit v1.2.3